Balance Sheet Components - Change in deferred revenue (Details) - USD ($) $ in Thousands	6 Months Ended
	Apr. 02, 2022	Apr. 03, 2021
Contract with Customer, Liability [Roll Forward]
Deferred revenue, beginning of period	$ 89,498	$ 62,389
Recognition of revenue included in beginning of period deferred revenue	(28,927)	(7,883)
Revenue deferred, net of revenue recognized on contracts in the respective period	16,063	16,383
Deferred revenue, end of period	$ 76,634	$ 70,889